摘要:
A reactor comprising, a low-temperature reaction part which causes reaction of a reactant, a high-temperature reaction part which causes reaction of the reactant at higher temperature than that of the low-temperature reaction part, a high-temperature reaction part heating element which heats high-temperature reaction part, and a wire which is connected to the high-temperature reaction part heating element and is wired to the low-temperature reaction part.
摘要:
A process for refining raw materials containing oil and/or bitumen includes supplying water and the raw materials to an expulsion stage and/or an expulsion stage and a downstream gasification stage to obtain solids containing non-evaporated fractions of heavy hydrocarbons and to expel hydrocarbonaceous vapour. The expelled hydrocarbonaceous vapour is supplied to a processing stage and is further processed to expel hydrocarbonaceous vapour to obtain processing stage products which are separated and withdrawn. The solids from the expulsion stage and/or the expulsion stage and the downstream gasification stage are introduced into a combustion stage. The non-evaporated fractions of heavy hydrocarbons are burned in the combustion stage to obtain hot solids which are recirculated from the combustion stage into the expulsion stage and/or the downstream gasification stage. An oxidizing atmosphere of the combustion stage is separated from an atmosphere of the expulsion stage and/or the downstream gasification stage using a blocking device.
摘要:
A synchronous reaction cell, rotating as a unit, disassociates hydrogen from water, traps and filters hydrogen, mixes and pressurizes hydrogen and ingested carbon, hydrogenates carbon by surface catalysis, isolates and exhausts liquid hydrocarbon products above a desired density, recirculates gaseous products for further reaction, and expands steam through a turbine to produce rotation and turn an electrical generator. Solar energy focused by heliostats is one means of supplying process heat. Burning natural gas or another fossil fuel in oxygen freed by the disassociation of water provides alternative sources of heat. The reaction cell has a vertical axis-of-rotation making it conducive to mounting on a tower disposed at the center of an array of heliostats. The rotating reaction cell has a large, cylindrical heat-absorbing surface. Electrical output might be used to aim heliostats. Excess electrical generation might be added to the local electrical grid and sold for its value.
摘要:
Methanol steam reforming catalysts, and steam reformers and fuel cell systems incorporating the same. In some embodiments, the methanol steam reforming catalyst includes zinc oxide as an active component. In some embodiments, the methanol steam reforming catalyst further includes at least one of chromium oxide and calcium aluminate. In some embodiments, the methanol steam reforming catalyst is not pyrophoric. Similarly, in some embodiments, steam reformers including a reforming catalyst according to the present disclosure may include an air-permeable or air-accessible reforming catalyst bed. In some embodiments, the methanol steam reforming catalyst is not reduced during use. In some embodiments, the methanol reforming catalysts are not active at temperatures below 275° C. In some embodiments, the methanol steam reforming catalyst includes a sulfur-absorbent material. Steam reformers, reforming systems, fuel cell systems and methods of using the reforming catalysts are also disclosed.
摘要:
A process for producing electrical power, chemicals, carbon dioxide, and hydrogen is provided. One or more feedstocks and one or more oxidants can be combined in a fluidized reaction zone heated to a temperature from about 1050° F. to about 1900° F. to provide a synthesis gas comprising carbon dioxide, carbon monoxide and hydrogen. In one or more embodiments, at least a portion of the synthesis gas can be used as a fuel source for one or more turbines to drive one or more electrical generators. In one or more embodiments, at least a portion of the synthesis gas can be introduced to one or more gas converters to provide methanol, alkyl formates, dimethyl ether, ammonia, Fischer-Tropsch products, derivatives thereof or combinations thereof.
摘要:
In one embodiment, a fuel reformer can comprise: a mixing zone capable of mixing a fuel and an oxidant to form a fuel mixture and a reforming zone disposed downstream of the mixing zone. The reforming zone comprises a primary substrate and a secondary substrate. The primary substrate is disposed upstream of the secondary substrate and has a primary thermal mass that is greater than a secondary thermal mass of the secondary substrate. One embodiment of a method for operating a fuel reformer can comprise: mixing an oxidant and a fuel to form a fuel mixture, combusting the fuel mixture, heating the secondary substrate above its light-off temperature, changing an air to fuel ratio of the fuel mixture to a reforming mixture, producing an exotherm and a reformate at the secondary substrate, heating a primary substrate with the exotherm to above its light-off temperature, and producing a reformate.
摘要:
An apparatus and method for recovering and recycling hydrogen from a reforming process raises the pressure of at least one hydrogen-rich gas stream from at least one catalyst lock hopper and delivers at least a portion of the pressurized hydrogen-rich gas stream to at least one predetermined downstream location. At least another portion of the pressurized hydrogen-rich gas is used to maintain the desired pressure within the hydrogen recovery and recycling process and apparatus.
摘要:
A fluid bed reactor is configured to process a reactive material to form one or more products. The reactor includes a reaction vessel defining a compartment configured to receive the reactive material. A first cluster of heating conduits at least partially occupies the compartment and extends over a first vertical extent within the compartment. A second cluster of heating conduits partially occupies the compartment and extends over a second vertical extent within the compartment. The first cluster of heating conduits is vertically below the second cluster of heating conduits and spaced apart therefrom by a first separation distance. Feedstock inlets are configured to introduce the reactive material into a region that is vertically between the first and second clusters of heating conduits. The heating conduits in the first cluster have a first thickness while the heating conduits in the second cluster have a second thickness. The first separation distance is at least as great as the smaller of the first and second thicknesses.
摘要:
A system is set forth for the exothermic generation of soot depleted syngas comprising (i) reacting a hydrocarbon-containing fuel with an oxygen containing gas in a first reactor to produce the syngas and byproducts comprising CO2, H2O and soot; and (ii) introducing the syngas and byproducts into a second reactor containing a non-carbonaceous material that traps the soot for a sufficient time such that the majority of the byproduct soot is gasified via reaction with the byproduct CO2 and/or H2O to produce a syngas stream that is depleted in the soot. The system is particularly suitable for the practice of heat exchange reforming wherein a portion of the heat is recovered from the soot depleted syngas stream and used as at least a portion of the heat to facilitate the additional production of syngas via the (endothermic) catalytic reforming of natural gas and steam.
摘要:
Disclosed is a process for humidifying syngas to achieve a water to carbon monoxide molar ratio in the product syngas within a desired range and in which the molar ratio which can be varied over time in response to changes in downstream syngas requirements. The raw syngas is produced by reacting a carbonaceous material with oxygen, water, or carbon dioxide and can be combined with a diluent to produce a diluted syngas stream which can be cooled and contacted with liquid water to give a humidified syngas. The H2O:CO molar ratio of the humidified syngas may be adjusted in response to time-varying downstream syngas requirements by changing the amount and/or temperature of the diluent that is combined with the raw syngas stream, by adjusting quench and heat exchange conditions, or a combination thereof. The application of the process to the coproduction of chemicals and power are also disclosed.